The crash took place Tuesday morning near the Fremont Street crossing over Highway 99, the Stockton CHP said.

"The bicyclist was in the bike lane and the big rig driver was making a right turn off the freeway. Either the bicyclist didn't stop, or tried to stop and couldn't. He went under the truck," CHP Officer Mike Lowry said.

The cyclist was pronounced dead at the crash scene.

"He looked to be in his 40s," Lowry said.

The cyclist was riding a silver mountain bike. His identity has not been released.

Photos from the field: Police investigate deadly Stockton collision

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Michael "Domi" Domalaog/KCRA

Stockton crash 5

The California Highway Patrol is investigating a deadly wreck involving a vehicle and a cyclist in Stockton, officers at the crash scene told KCRA 3 (Oct. 9, 2012).